Which molecule has trigonal planar geometry ?

Options

A. `IF_(3)`
B. `PCl_(3)`
C. `NH_(3)`
D. `BF_(3)`

Answer

D

Explanation

`BF_(3) rarr` Atomic no. of `B = 5`
`EC = 1s^(2) 2s^(2) 2p_(x)^(1)`
EC in excited state is ` 1s^(2) 2s^(2) 2p_(x)^(1),2p_(y)^(1)`
`rArr` One `2s` and two `2p` orbital, undergo `sp^(2)`hybridizations
As
.